import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebServlet("/getParameter")
public class getParameter extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        //tomcat会自动把 query string 解析成Map这样的结构
        //getParameter 是在查询Map里面的内容
        String username = req.getParameter("username");
        String password = req.getParameter("password");

        System.out.println("username = " + username);
        System.out.println("password = " + password);

        resp.getWriter().write("OK");
    }
}
